Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Additional Information (Details)

v3.24.2.u1
Segment Information - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Segment
Jun. 30, 2023
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | Segment     3  
Impairment charges $ 1,400,000 $ 62,600,000 $ (2,400,000) $ 62,600,000
Segment Reporting Information [Line Items]        
Revenues 3,453,000,000 3,652,900,000 6,837,000,000 7,144,100,000
Retail New Vehicles [Member]        
Segment Reporting Information [Line Items]        
Revenues 1,552,600,000 1,608,200,000 3,008,400,000 3,051,000,000
Fleet New Vehicles [Member]        
Segment Reporting Information [Line Items]        
Revenues 26,200,000 28,300,000 45,800,000 47,100,000
New vehicles        
Segment Reporting Information [Line Items]        
Revenues 1,578,800,000 1,636,500,000 3,054,200,000 3,098,100,000
Used vehicles        
Segment Reporting Information [Line Items]        
Revenues 1,186,200,000 1,305,900,000 2,401,800,000 2,650,800,000
Wholesale vehicles        
Segment Reporting Information [Line Items]        
Revenues 71,300,000 91,500,000 148,600,000 177,000,000.0
Total vehicles        
Segment Reporting Information [Line Items]        
Revenues 2,836,300,000 3,033,900,000 5,604,600,000 5,925,900,000
Parts, service and collision repair        
Segment Reporting Information [Line Items]        
Revenues 444,100,000 443,700,000 890,800,000 874,200,000
Finance, insurance and other, net        
Segment Reporting Information [Line Items]        
Revenues $ 172,600,000 $ 175,300,000 $ 341,600,000 $ 344,000,000.0